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Top 5 Positive Customer Reviews for arduino uno
First time ordering from AliExpress. We were just ordering some Arduino parts and were not clear about what we were ordering. This has been a learning experience for us. The product was very good we are using it for our class projects. Cost was outstanding. We did have to wait but with the limited budget it was great.
Important to note that pin OE should be tied to VCCa when the board should be active if you want VCCb-powered pins to be active or tied to ground if not, but should not be left floating.
I would like to know how to use the features, like buzzer, but I seem to be able to program working chips once I figured out the Arduino as ISP process. I documented seven steps: 1. Insert Arduino chip in AVP ISP zero force socket and lock lever in place. 2. Mount AVP ISP on Arduino Uno and connect to USB. 3. Launch Arduino IDE 4. Load Arduino as ISP sketch from IDE samples 5. Load Arduino as ISP sketch into working Arduino Uno 6. Select Arduino IDE Tools->Arduino as ISP 7. Select Load Bootloader Seven steps to Get Lucky. If the chip returns ID of x00000 it is blown. Any trouble, test with known-good chip in the AVR ISP When completed, you probably want to reverse these steps and reinstall Blink sample.